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1、huabase基于列存储的关系型数据库系统（Huabaserelationaldatabasesystembasedoncolumnstorage）DrivingskillsThecorrectuseoflights.??Thesteeringlampisthemaindevicethatvehicledynamicinformation,installedinthefrontandrearofthevehicle,openwhenthevehicleisturning,itprovidestheguaranteefortrafficsafety,
2、toyouandothers,pleaseaccordingtotheregulationsontheuseofsteeringlight,makepeopleknowinadvancethecartrends,maketherightjudgments.Thecartothegeneralplaneintersection,roadwidth,trafficflowshouldbebasedonthesizeandspeedofthetime,in30-10metersawayfromtheintersectionwhere,accordingt
3、otheturningdirectionofopenturnlights,suchasturningrightandrightlanechangemustturnontheright,suchasaleftturnorchangetotheleftlanemustturnontheleftturnlight.Turningtotheintersectionwiththeguidinglane,thesteeringlampshouldbeopenedbeforeenteringtheguidinglane.?Whendrivingintoorout
4、oftheroundabout,thesteeringlightshouldbeopenedaccordingtothedirectionoftravel.Inthevehicle,whenthetrafficisnotsmooth,needtochangelanes,throughtherearviewmirror,observetheadjacentlaneisidleintheotherLanedoesnotinterferewiththenormalrunningofthevehicle,shouldturnontheturnsignala
5、ccordingly,andthenchangelanes.?Whenturningacar,turnontheleftturnlamp,andpayattentiontowhetherornotthecarcomesbeforeandafterthecar,andthenturnaround.Whenyouneedtoovertaketheroadwithoutmarkingthemainlineoftheroadcenter,youshouldturnontheleftturnlightandhonkthehorn(exceptonthefor
6、biddenroad).Ifyouareovertaking,shouldtherightto.Whenyouneedtopullasideinthecar,youshouldturnontherightturnlightbefore,andpayattentiontoobservethecarrearrighttrafficdynamics,andthenpullover.Whenleavingtheparkingplace,theleftturnlightshouldbeopenedinadvance,andthetrafficsituatio
7、nontherearleftsideofthecarshouldbeobserved,andthentothecarriageway.?Choosetherightlane.Ontheroadthatdividesthemotorlaneandthenonmotorizedlane,themotorvehiclerunsinthemotorlane.Intheroadwithoutdividingthecentrallineandthemotorlaneandthenonmotorizedlane,themotorvehiclerunsinthem
8、iddle.Ontheroadofdividingsmallmotorlaneandlargemotorlane,thes
